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Sun, 25 Dec 2022 15:43:09 +0000 (GMT) Received: from smtpav04.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6C4C420043; Sun, 25 Dec 2022 15:43:06 +0000 (GMT) Received: from tarunpc.ibmuc.com (unknown [9.43.100.54]) by smtpav04.fra02v.mail.ibm.com (Postfix) with ESMTP; Sun, 25 Dec 2022 15:43:06 +0000 (GMT) From: Tarun Sahu To: ltp@lists.linux.it Date: Sun, 25 Dec 2022 21:12:12 +0530 Message-Id: <20221225154213.84183-13-tsahu@linux.ibm.com> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20221225154213.84183-1-tsahu@linux.ibm.com> References: <20221225154213.84183-1-tsahu@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: BFyOkgg8mQQxtoRHjFYJwumnFi1Mxpmz X-Proofpoint-GUID: Lm-RQ_-4H3V_esDxVCZrqMMueUrCePrp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.205,Aquarius:18.0.923,Hydra:6.0.545,FMLib:17.11.122.1 definitions=2022-12-25_12,2022-12-23_01,2022-06-22_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 phishscore=0 impostorscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 lowpriorityscore=0 suspectscore=0 clxscore=1015 mlxlogscore=999 adultscore=0 spamscore=0 malwarescore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2212070000 definitions=main-2212250138 X-Virus-Scanned: clamav-milter 0.102.4 at in-3.smtp.seeweb.it X-Virus-Status: Clean Subject: [LTP] [PATCH 12/13] Hugetlb: Migrating libhugetlbfs shm-fork X-BeenThere: ltp@lists.linux.it X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux Test Project List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: geetika@linux.ibm.com, sbhat@linux.ibm.com, aneesh.kumar@linux.ibm.com, vaibhav@linux.ibm.com, rpalethorpe@suse.com Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: ltp-bounces+ltp=archiver.kernel.org@lists.linux.it Sender: "ltp" Migrating the libhugetlbfs/testcases/shm-fork.c test Test Description: Test shared memory behavior when multiple threads are Test shared memory behavior when multiple threads are attached to a segment. A segment is created and then children are spawned which attach, write, read (verify), and detach from the shared memory segment. Signed-off-by: Tarun Sahu --- runtest/hugetlb | 1 + testcases/kernel/mem/.gitignore | 1 + .../kernel/mem/hugetlb/hugefork/hugefork02.c | 104 ++++++++++++++++++ 3 files changed, 106 insertions(+) create mode 100644 testcases/kernel/mem/hugetlb/hugefork/hugefork02.c diff --git a/runtest/hugetlb b/runtest/hugetlb index 33fd384b4..348a7dc5f 100644 --- a/runtest/hugetlb +++ b/runtest/hugetlb @@ -2,6 +2,7 @@ hugefallocate01 hugefallocate01 hugefallocate02 hugefallocate02 hugefork01 hugefork01 +hugefork02 hugefork02 -P 3 -s 5 hugemmap01 hugemmap01 hugemmap02 hugemmap02 diff --git a/testcases/kernel/mem/.gitignore b/testcases/kernel/mem/.gitignore index 8375389cd..0c1311303 100644 --- a/testcases/kernel/mem/.gitignore +++ b/testcases/kernel/mem/.gitignore @@ -2,6 +2,7 @@ /hugetlb/hugefallocate/hugefallocate01 /hugetlb/hugefallocate/hugefallocate02 /hugetlb/hugefork/hugefork01 +/hugetlb/hugefork/hugefork02 /hugetlb/hugemmap/hugemmap01 /hugetlb/hugemmap/hugemmap02 /hugetlb/hugemmap/hugemmap04 diff --git a/testcases/kernel/mem/hugetlb/hugefork/hugefork02.c b/testcases/kernel/mem/hugetlb/hugefork/hugefork02.c new file mode 100644 index 000000000..6596bf81f --- /dev/null +++ b/testcases/kernel/mem/hugetlb/hugefork/hugefork02.c @@ -0,0 +1,104 @@ +// SPDX-License-Identifier: LGPL-2.1-or-later +/* + * Copyright (C) 2005-2006 David Gibson & Adam Litke, IBM Corporation. + * Author: David Gibson & Adam Litke + */ + +/*\ + * [Description] + * + * Test shared memory behavior when multiple threads are attached to a + * segment. A segment is created and then children are spawned which + * attach, write, read (verify), and detach from the shared memory segment. + */ + +#define _GNU_SOURCE +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +#include "tst_safe_sysv_ipc.h" +#include "hugetlb.h" + +static int shmid = -1; + +#define NR_HUGEPAGES 5 +#define NUMPROCS 20 +#define MNTPOINT "hugetlbfs/" +#define MAX_PROCS 200 +#define BUF_SZ 256 + +static long hpage_size; + +static void do_child(int thread, unsigned long size) +{ + volatile char *shmaddr; + int j; + unsigned long k; + + for (j = 0; j < 5; j++) { + shmaddr = SAFE_SHMAT(shmid, 0, SHM_RND); + + for (k = 0; k < size; k++) + shmaddr[k] = (char) (k); + for (k = 0; k < size; k++) + if (shmaddr[k] != (char)k) { + tst_res(TFAIL, "Thread %d, Offset %lu mismatch", thread, k); + goto cleanup; + } + + SAFE_SHMDT((const void *)shmaddr); + } +cleanup: + exit(0); +} + +static void run_test(void) +{ + unsigned long size; + int pid; + int i; + + size = hpage_size * NR_HUGEPAGES; + shmid = SAFE_SHMGET(2, size, SHM_HUGETLB|IPC_CREAT|SHM_R|SHM_W); + + for (i = 0; i < NUMPROCS; i++) { + pid = SAFE_FORK(); + + if (pid == 0) + do_child(i, size); + } + + tst_reap_children(); + tst_res(TPASS, "Successfully tested shared hugetlb memory with multiple procs"); +} + +static void setup(void) +{ + hpage_size = SAFE_READ_MEMINFO(MEMINFO_HPAGE_SIZE)*1024; +} + +static void cleanup(void) +{ + if (shmid >= 0) + SAFE_SHMCTL(shmid, IPC_RMID, NULL); +} + +static struct tst_test test = { + .needs_root = 1, + .mntpoint = MNTPOINT, + .needs_hugetlbfs = 1, + .needs_tmpdir = 1, + .forks_child = 1, + .setup = setup, + .cleanup = cleanup, + .test_all = run_test, + .hugepages = {NR_HUGEPAGES, TST_NEEDS}, +}; -- 2.31.1 -- Mailing list info: https://lists.linux.it/listinfo/ltp